Q: What is the negative version of the number 21,720,637?
A: -21,720,637
Negative numbers are usually written with - in front of them. They represent a number that is less than zero.
Here are more examples of negative numbers in sequence:
| 21,720,635 | 21,720,636 | 21,720,638 | 21,720,639 |
| -21,720,635 | -21,720,636 | -21,720,638 | -21,720,639 |